JP2957155B2 - Air conditioner heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger (e.g., an evaporator or a condenser) of an air conditioner, and more particularly, to a heat exchanger generated according to a difference in air flow or a difference in refrigerant flow for each refrigerant path. The present invention relates to a heat exchanger of an air conditioner in which the shape of a flat plate fin is made different for each part so as to minimize the deviation of the temperature distribution.

[0002]

2. Description of the Related Art As shown in FIG. 1, a conventional heat exchanger of an air conditioner is required for cooling when airflow (air) flows between two veneers 10 maintaining a predetermined interval. A plurality of plate fins 20 arranged in parallel at a predetermined interval so as to be heat-exchanged cold to a temperature or to a temperature required for heating, A plurality of heat transfer tubes 30 inserted and arranged in a vertical zigzag direction perpendicular to the single plate 10 or the flat fin 20 so that the temperature is thermally conducted to the flat fin 20; The plurality of protruded heat transfer tubes 3
And a plurality of return pipes 40 connected to these heat transfer pipes 30 so that the heat transfer pipes 0 are connected by one passage.

At this time, the flat plate fins 20 are shown in FIG.
As shown in the figure, the overall shape is formed flat,
Alternatively, as shown in FIGS. 2 (b) and 2 (c), the entire shape has been formed into a wave and a slit in the flowing air flow direction.

[0004]

According to the heat exchanger of the air conditioner configured as described above, the flat fins 20 are flat, wave-like, and flat as shown in FIGS. 2 (a) to 2 (c).
If the jet flow of the refrigerant is not uniform due to the refrigerant path (for example, a difference in air volume or a difference in the flow rate of the refrigerant), the temperature distribution of the flat plate fins 20 has been reduced. Deviation occurs significantly,
There was a problem that the efficiency of heat exchange was reduced.

[0005]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the above-mentioned problems, and an object of the present invention is to make the shape of a flat fin different for each part and to make a difference in air flow rate or a difference in a refrigerant flow rate for each refrigerant path. An object of the present invention is to provide a heat exchanger for an air conditioner, which minimizes deviation of a temperature distribution caused by the difference and enhances heat exchange efficiency.

[0006]

The heat exchanger of the air conditioner according to the present invention comprises a plurality of flat fins arranged in parallel at a predetermined interval so that an air current flows between the fins and a fluid. In a heat exchanger of an air conditioner comprising a plurality of heat transfer tubes inserted and arranged vertically at right angles to the plurality of flat fins so as to flow inside, the plurality of flat fins pass through the flat fins Even if the velocity of the flowing air flow is generated so as to be different for each part, the plate portion, the wave portion, and the slit portion are divided and formed in the descending order of the velocity distribution of the flowing air flow so that the deviation of the temperature distribution of the refrigerant as a whole can be reduced. It is characterized by the following.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. In the drawing,
The same components as those of the related art are given the same names and the same reference numerals, and detailed descriptions thereof will be omitted.

In FIGS. 3 and 4, reference numeral 60 denotes a plate portion in the descending order of the velocity of the flowing air flow so as to reduce the deviation of the overall refrigerant temperature distribution even if the velocity of the flowing air flow is generated differently for each part. FIG. 4 shows a plurality of flat plate fins formed by arranging the shapes of a wave portion and a slit portion.

That is, as shown in FIGS. 3 to 5, when the velocity of the flowing air flowing through the plurality of flat plate fins 60 is higher at the upper portion than at the lower portion of the flat plate fins 60, as shown in FIGS. The plate portion 61 is formed so as to have a shape corresponding thereto, and in the middle of the plate portion 61, the velocity of the flowing air flow passing through the plurality of flat plate fins 60 is smaller than the upper portion of the plate fin 60 but larger than the lower portion. The wave portion 62 is formed so as to have a shape corresponding thereto, and when the velocity of the flowing airflow passing through the plurality of flat plate fins 60 is lower in the lower portion than in the upper portion and the middle portion of the flat plate fin 60, A slit portion 63 is formed so as to have a corresponding shape.

At this time, as shown in FIG. 5, the plurality of slits 63 arranged on the front side with respect to the heat transfer tube 30 are cut on the back side of the flat fins 60 so as to be opened in the flowing air flow direction. And a plurality of slits 6 arranged rearward around the heat transfer tube 30.
Numeral 3 is formed by cutting on the surface side of the flat plate fin 60 so as to be opened in the flowing air flow direction.

Further, the plurality of slit portions 63 are formed with the heat transfer tube 30 and a predetermined substrate portion 64 therebetween. The slit portions 63 and the wave portions 62 are repeatedly formed such that the slit portions 63 and the wave portions 62 are alternately arranged vertically in a front surface direction and a rear surface direction with respect to a predetermined area on a vertical side of the plurality of flat plate fins 60.

Next, the operation and effect of the present invention thus configured will be described. As shown in FIG. 3, when the airflow flows in the direction of the arrow (S), the flowing airflow comes into contact with the surface of the flat plate fins 60 and the surface of the heat transfer tube 30 while passing between the plurality of flat plate fins 60 to form turbulence. By doing so, heat exchange is performed between the cooling and warming airflows due to the difference between the temperature of the refrigerant circulating in the plurality of heat transfer tubes 30 and the airflow temperature.

At this time, in the case where a refrigerant path in which the velocity distribution of the flowing airflow passing through the plurality of flat plate fins 60 becomes smaller from the upper part to the lower part of the flat plate fins 60, FIG.
The flowing airflow passing through the section H1 shown in FIG. 3 contacts the surface of the plate portion 61 to perform heat exchange, and the flowing airflow passing through the section H2 comes into contact with the surface of the wave portion 62 to perform heat exchange. The flowing air flowing through the slit 63
This causes turbulence and heat exchange.

That is, in the H1 section where the velocity distribution (air volume) of the flowing airflow is large, the plate portion 6 having a small frictional resistance of the airflow is used.
1 is provided, and in the H3 section where the velocity distribution of the flowing air flow is small, the shape of the slit portion 63 having high frictional resistance of the air flow is provided. In the H2 section where the velocity distribution of the flowing air flow is smaller than the H1 section and larger than the H3 section, the friction of the air flow is increased. By providing the shape of the wave portion 62 having a slightly inferior resistance, it is possible to reduce the deviation of the overall temperature distribution of the refrigerant of the flat fins 60 even if the distribution of the flow velocity of the flowing air flow is different from part to part. it can.

In the above description, the plate portion 61, the wave portion 62,
Each of the slit portions 63 is separated from each other by a predetermined distance,
Although the heat exchanger of the air conditioner divided and formed at the middle and lower positions has been described by way of an example, the present invention is not limited to this. For example, FIG.
As shown in the figure, the plate portion 61 is divided into a predetermined distance above the vertical area of the flat plate fin 60, and the remaining wave portions 62 and the slit portions 63 are formed on the lower side of the vertical area of the flat plate fin 60. Of course, even if it is formed separately at a predetermined distance on the intermediate side, it is included in the concept of the present invention.

As another embodiment, as shown in FIG. 7, the plate portion 6 is formed by dividing the slit portion 63 at a predetermined distance above the vertical area of the flat plate fin 60.
1 and the wave portion 62 are separately formed at predetermined distances on the lower side and the intermediate side with respect to the vertical area of the flat plate fin 60, or the plate portion 61 and the wave portion 62 are formed as shown in FIG. The fins 60 may be formed separately at predetermined distances on the intermediate side and the lower side with respect to the vertical area of the fins 60.

As another embodiment, as shown in FIG. 9, the wave portion 62 is formed to be divided at a predetermined distance above the vertical area of the flat plate fin 60, and the plate portion 61 and the slit are formed. The portion 63 is formed separately at a predetermined distance between the lower side and the intermediate side with respect to the area of the vertical side of the flat plate fin 60, or as shown in FIG.
The slits 63 may be separately formed at predetermined distances on the intermediate side and the lower side with respect to the area on the vertical side of the flat plate fin 60.

[0018]

As described above, according to the heat exchanger of the air conditioner of the present invention, the plate fin, the wave shape, and the slit shape are divided and formed at positions suitable for the characteristics of the refrigerant path on the flat fin. Therefore, there is an effect that the deviation of the temperature distribution generated due to the difference in the air volume or the difference in the flow rate of the refrigerant is minimized, and the efficiency of heat exchange is enhanced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a conventional heat exchanger.

FIGS. 2A and 2B are cross-sectional views showing various types of conventional flat plate fins, in which FIG. 2A is a cross-sectional view in which the flat plate fins are formed in a flat shape, and FIG. (C) is a cross-sectional view in which a flat fin is formed in a slit shape.

FIG. 3 is a front view showing the flat plate fin of the present invention.

FIG. 4 is a vertical sectional view taken along line AA of FIG. 3;

FIG. 5 is a transverse sectional view taken along line BB of FIG. 3;

FIG. 6 is a side sectional view showing a state in which a plate portion, a wave portion, and a slit portion of the present invention are divided into three equal portions at different upper, lower, middle, and lower positions by flat plate fins.

FIG. 7 is a side sectional view showing a state in which a plate portion, a wave portion, and a slit portion of the present invention are divided into three equal portions at different upper, lower, middle, and lower positions by flat plate fins.

FIG. 8 is a side sectional view showing a state in which a plate portion, a wave portion, and a slit portion according to the present invention are divided into three equal portions at different upper, lower, middle, and lower positions by flat plate fins and divided and arranged.

FIG. 9 is a side cross-sectional view showing a state in which a plate portion, a wave portion, and a slit portion of the present invention are divided into three equal portions at different upper, lower, middle, and lower positions by flat plate fins and divided and arranged.

FIG. 10 is a side cross-sectional view showing a state in which a plate portion, a wave portion, and a slit portion of the present invention are divided into three equal portions at different upper, middle, and lower positions by flat plate fins and divided and arranged.

[Explanation of symbols]

 Reference Signs List 30 heat transfer tube 60 flat plate fin 61 plate portion 62 wave portion 63 slit portion 64 substrate portion

Claims (9)

(57) [Claims] 1. A plurality of flat plate fins arranged in parallel at a predetermined interval so that an air flow flows between them, and a vertical direction with respect to the plurality of flat plate fins so that a fluid flows inside. In the heat exchanger of an air conditioner including a plurality of heat transfer tubes inserted and arranged at right angles to each other, the plurality of flat fins may be generated such that the velocity of a flowing airflow passing through the flat fins differs partially. ,
A heat exchanger for an air conditioner, wherein a plate portion, a wave portion, and a slit portion are divided and formed in the descending order of the velocity distribution of the flowing air flow so that the deviation of the temperature distribution of the refrigerant as a whole can be reduced. 2. The flat plate fin, wherein the plate portion, the wave portion, and the slit portion are formed at upper, middle, and lower positions, respectively, at a predetermined distance from each other in a vertical area. The heat exchanger for an air conditioner according to claim 1. 3. The plate portion, the slit portion, and the wave portion are respectively formed at upper, middle, and lower positions at predetermined distances in a vertical area of the plurality of flat fins. The heat exchanger for an air conditioner according to claim 1. 4. The slit portion, the wave portion, and the plate portion are formed at upper, middle, and lower positions, respectively, at predetermined intervals in a vertical area of the plurality of flat fins. The heat exchanger for an air conditioner according to claim 1. 5. A method according to claim 5, wherein the slit, plate, and wave portions are formed at upper, middle, and lower positions, respectively, at a predetermined distance in a vertical area of the plurality of flat fins. The heat exchanger for an air conditioner according to claim 1. 6. The plurality of flat plate fins are formed such that the wave portion, the slit portion, and the plate portion are respectively divided at upper, middle, and lower positions at a predetermined distance from each other in a vertical area. The heat exchanger for an air conditioner according to claim 1. 7. The wave plate, the plate portion, and the slit portion are formed at upper, middle, and lower positions, respectively, at a predetermined distance in a vertical area of the plurality of flat fins. The heat exchanger for an air conditioner according to claim 1, wherein 8. The air according to claim 1, wherein the wave portion is repeatedly formed so as to be alternated up and down with respect to a predetermined area on a vertical side of the plurality of flat plate fins in a front surface direction and a rear surface direction. A heat exchanger for a harmonic machine. 9. The air according to claim 1, wherein the slits are repeatedly formed so that the slits are alternately arranged in a vertical direction with respect to a predetermined area on a vertical side of the plurality of flat plate fins. A heat exchanger for a harmonic machine.